F1 - "Systematic Byzantine Fault Tolerante Load Balancer"

Description

Last piece of code I found of my Master thesis, probably it's imcomplete but it is the most that I've found.

Maybe it helps someone who may be looking for soem answers.

Install

Configure and Make the LBs

ifconfig eth0 hw ether 001aa0b8132c
ifconfig eth0 inet 10.101.233.153 netmask 255.255.255.0
gcc -Wall -o dropper dropper.c -lnfnetlink -lnetfilter_queue

Install httpd:

tar xvf clean-src-httpd.tar.gz
cd httpd-2.4.3
apt-get install libpcre3-dev
./configure --prefix=/path/to/httpd --with-include-apr
make
make install
cd ..
cp balancers/* httpd-2.4.3/modules/proxy/balancers/
cd httpd-2.4.3/modules/proxy/balancers/
make clean
make
make install
cd ../../../..
cp conf/*.conf /path/to/httpd/conf

How to Configure the Network

1. Forwarder IPTABLES:

• Tomcat Servers (10.10.5.126, 10.10.5.221):

sh ./tomcat/bin/catalina.sh start

• Forwarder (10.10.5.201):

sysctl -e net.ipv4.ip_forward=1
arp -s 10.10.5.100 ff:ff:ff:ff:ff:ff
iptables -t nat -A PREROUTING -p tcp --dport 5555 -d 10.10.5.201 -j DNAT --to 10.10.5.100:5555
iptables -t nat -A POSTROUTING -p tcp -d 10.10.5.100 --dport 5555 -j MASQUERADE

• LB Servers (10.10.5.153, 10.10.5.172):

ifconfig eth0:1 10.10.5.100 netmask 255.255.255.0
iptables -t raw -A PREROUTING -p tcp --dport 5555 -d 10.10.5.100 -j NFQUEUE --queue-num 1
iptables -t mangle -A POSTROUTING -p tcp --sport 5555 -j NFQUEUE --queue-num 1
gcc -Wall -O3 -o dropSendMask dropSendMask.c -lnfnetlink -lnetfilter_queue
./dropSendMask

1.a Forwarder IPTABLES: (Dif Clients)

• Tomcat Servers (10.10.5.126, 10.10.5.221):

sh ./tomcat/bin/catalina.sh start

• Forwarder (10.10.5.201):

sysctl -e net.ipv4.ip_forward=1
arp -s 10.10.5.100 ff:ff:ff:ff:ff:ff
iptables -A INPUT -p tcp --dport 5555 -d 10.10.5.201 -j TEE --gateway 10.10.5.100
iptables -A OUTPUT -p tcp --sport 5555 -j DROP

• LB Servers (10.10.5.153, 10.10.5.172):

iptables -t raw -A PREROUTING -p tcp --dport 5555 -d 10.10.5.201 -j NFQUEUE --queue-num 1
iptables -t mangle -A POSTROUTING -p tcp --sport 5555 -j NFQUEUE --queue-num 1
gcc -Wall -O3 -o dropSendMask dropSendMask.c -lnfnetlink -lnetfilter_queue
./dropSendMask

2. Multicast Loop:

• Tomcat Servers (10.10.5.126, 10.10.5.221):

sh ./tomcat/bin/catalina.sh start

• Router (10.10.5.201):

iptables -A OUTPUT -p tcp --sport 5555 --tcp-flags RST RST -j DROP
gcc -Wall -o forwarder forwarder.c
./forwarder

• LB Servers (10.10.5.153, 10.10.5.172):

./httpd/bin/httpd -k start
iptables -t raw -A PREROUTING -p tcp --dport 5555 -j NFQUEUE --queue-num 1
iptables -t mangle -A POSTROUTING -p tcp --sport 5555 -j NFQUEUE --queue-num 1
gcc -Wall -O3 -o dropmask dropmask.c -lnfnetlink -lnetfilter_queue
./dropmask

3. HUB:

• Tomcat Servers (10.10.5.126, 10.10.5.221):

sh ./tomcat/bin/catalina.sh start

• LB Servers (10.10.5.201, 201):

ifconfig eth0 hw ether 00:23:ae:a4:7e:53
ifconfig eth0 10.10.5.201
iptables -t raw -A PREROUTING -p tcp --dport 5555 -j NFQUEUE --queue-num 1
iptables -A OUTPUT -p tcp --dport 8080 --tcp-flags RST RST -j DROP
gcc -Wall -O3 -o dropper dropper.c -lnfnetlink -lnetfilter_queue
./dropper

4. OPENFLOW: (incomplete)

• Flows:

ovs-ofctl add-flow tcp:192.168.2.254:6634 ip,idle_timeout=0,nw_dst=192.168.7.111,actions=output:11
ovs-ofctl add-flow tcp:192.168.2.254:6634 ip,idle_timeout=0,nw_dst=192.168.7.103,actions=output:3
ovs-ofctl add-flow tcp:192.168.2.254:6634 arp,idle_timeout=0,actions=NORMAL

• On the Switch:

config
vlan 7 openflow listener ptcp:6634 enable
vlan 7 untagged 1-12

Notes:

• Clear iptables:

iptables -F -t nat
iptables -F -t mangle
iptables -F -t raw
iptables -F

• Useful libs:

sudo apt-get install libnetfilter-queue-dev libaprutil1-dev

• Clear route:

route del -net 10.101.233.161 netmask 255.255.255.255 gw 10.101.233.104
route del -net 192.168.1.0 netmask 255.255.255.0 gw 10.101.233.104

• Default Gateway:

route add default gw 10.101.233.104

• Delete arp:

ifconfig eth0:1 192.168.1.1 netmask 255.255.255.128
arp -d 192.168.1.3
ifconfig eth0:1 down
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